I think I found the solution to the sudden disappearance of Apple TV and iTunes to certain movies , TV series or music .
I accidentally discovered that it was possible for movies or series can be hidden. The update of the Apple TV and iTunes seems ( to me anyway) turned sharply this option.
To find your movie, your tv series , books or music that you have lost , you must:
1. Go to iTunes. iTunes Store. Click on your Apple ID, your account. Type your password
2. In the data page of the account: if you have a look under " Products hide " or movies . By clicking above, you will have access to movies, music , books , the TV series that have unfortunately been "masked" .
You must click "show " for the new make available to all your devices and find the products purchased that you could not see .
I stumbled across this feature
sorry for my english ...